Transparency data

CMA: Business Appointment Rules advice, October to December 2025

Published 24 March 2026

Simon Constantine

Title of former civil service role

Legal Director (seconded to Independent Football Regulator as Senior Lawyer)

Date left or retired from the Civil Service

31 December 2025

New employer

Independent Football Regulator

New appointment or employment (including when taken up)

• Deputy Director, Legal - taken up on 1 January 2026

The Department approves this application, subject to the following conditions:

• that unless the CMA otherwise consents, he shall not undertake, for a period of two years from his last day in the Civil Service, any work on any matters he was involved with (or anything closely related to those matters) whilst working at the CMA

• the applicant has been reminded of his on-going obligations of non-disclosure of information obtained whilst working for the CMA, namely that he will

  • not use or disclose any confidential information obtained, in particular in relation to any case or project which the applicant supported while working for the CMA

  • continue to comply with the duty of confidentiality and other obligations as provided for in the Civil Service Code, the Official Secrets Act 1989, and under the terms of his appointment with the CMA

  • not disclose any information acquired during the applicant’s employment with the CMA which is protected by Part 9 of the Enterprise Act 2002

  • not use or in any way disclose information acquired during the applicant’s employment with the CMA which is subject to legal professional privilege, including both legal advice privilege and litigation privilege

Neha Dhaun

Title of former civil service role

Director

Date left or retired from the Civil Service

26 December 2025

New employer

J Sainsbury

New appointment or employment (including when taken up)

• Head of Competition Law & Consumer Law - taken up on 14 January 2026

The Department approves this application, subject to the following conditions:

• that unless the CMA otherwise consents, she shall not undertake, for a period of two years from her last day in the Civil Service, any work on any matter she was involved in whilst working at the CMA, including any work closely related to, or arising from, such matters, on behalf of her new employer (or on behalf of any clients of her new employer)

She is also reminded of her on-going obligations of non-disclosure of information obtained whilst working for the CMA, namely that she will:

• not use or disclose any confidential information obtained, in particular in relation to any case or project which the applicant supported while working for the CMA

• continue to comply with the duty of confidentiality and other obligations as provided for in the Civil Service Code, the Official Secrets Act 1989, and under the terms of his appointment with the CMA

• not disclose any information acquired during the applicant’s employment with the CMA which is protected by Part 9 of the Enterprise Act 2002

• not use or in any way disclose information acquired during the applicant’s employment with the CMA which is subject to legal professional privilege, including both legal advice privilege and litigation privilege.

Ivan Olszak

Title of former civil service role

Director of Econometrics

Date left or retired from the Civil Service

17 December 2025

New employer

Deliveroo

New appointment or employment (including when taken up)

• Staff Data Scientist - taken up on 12 January 2026

Department’s Decision on Application (including details of any waiting period or other conditions or restrictions applied)

The Department approves this application, subject to the following conditions:

• that unless the CMA otherwise consents, he shall not undertake, for a period of one year from his last day in the Civil Service, any work on any matters he was involved with whilst working at the CMA, including any work closely related to, or arising from, such matters, on behalf of his new employer

He is also reminded of his on-going obligations of non-disclosure of information, namely that he will:

• not use or disclose any confidential information obtained while working for the CMA, in particular in relation to any case or project which the applicant supported while working for the CMA

• continue to comply with the duty of confidentiality and other obligations as provided for in the Civil Service Code, the Official Secrets Act 1989, and under the terms of his appointment with the CMA

• not disclose any information acquired during his employment with the CMA which is protected by Part 9 of the Enterprise Act 2002

• not use or in any way disclose information acquired during the applicant’s employment with the CMA which is subject to legal professional privilege, including both legal advice privilege and litigation privilege

Mike Walker

Title of former civil service role

Chief Economic Adviser

Date left or retired from the Civil Service

28 December 2025

New employer

Frontier Economics

New appointment or employment (including when taken up)

• Senior Adviser - taken up on 5 January 2026

His appointment with Frontier Economics is subject to the following conditions:

• that, unless the CMA otherwise consents, he shall not undertake, for a period of two years from his departure date, any work on any matter he was involved in whilst working at the CMA, including any work closely related to, or arising from, such matters, on behalf of his new employer (or on behalf of any clients of his new employer)

• that, unless the CMA otherwise consents, he shall not undertake, for a period of twelve months from his departure date, any work for any of the main parties to a case where the applicant has appeared as an expert for the CMA before the Competition Appeal Tribunal

• that, unless the CMA otherwise consents, he shall not undertake, for a period of two years from his departure date, any work/case directly associated with any CMA case which was known to him as part of the CMA’s pipeline at the time of his departure date

• that, unless the CMA otherwise consents, he will not advise on any matter concerning the work of the CMA’s microeconomics unit as at his departure date, or concerning reference pricing, or dynamic pricing, to the extent that matter relates to information that is not in the public domain, until such time as the work of the microeconomics unit or a CMA policy position is published in final version

• that, unless the CMA otherwise consents, he, for a period of six months from his departure date, may not appear on any matter before the CMA, or be directly in contact with the CMA on any matter, on behalf of his new employer (or on behalf of any clients of his new employer). We also take this opportunity to remind him of his on-going obligations of non-disclosure of information received during his time at the CMA, namely that he must:

  • continue to comply with the duty of confidentiality and other obligations as provided for in the Civil Service Code/Civil Service Management Code, the Official Secrets Act 1989, and under the terms of his appointment with the CMA

  • not disclose any information acquired during his employment with the CMA which is protected by Part 9 of the Enterprise Act 2002

  • not use or disclose, any other confidential information obtained while working at the CMA

Bethan Watts

Title of former civil service role

Director

Date left or retired from the Civil Service

2 October 2025

New employer

The Purkiss Partnership

New appointment or employment (including when taken up)

• Solicitor - taken up on 13 October 2025

The Department approves this application, subject to the following conditions:

• that unless the CMA otherwise consents, she shall not undertake, for a period of two years from her last day in the Civil Service, any work on any matter she was involved in whilst working at the CMA, including any work closely related to, or arising from, such matters, on behalf of her new employer (or on behalf of any clients of her new employer)

She is also reminded of her on-going obligations of non-disclosure of information obtained whilst working for the CMA, namely that she will:

• not use or disclose any confidential information obtained, in particular in relation to any case or project which the applicant supported while working for the CMA

• continue to comply with the duty of confidentiality and other obligations as provided for in the Civil Service Code, the Official Secrets Act 1989, and under the terms of his appointment with the CMA

• not disclose any information acquired during the applicant’s employment with the CMA which is protected by Part 9 of the Enterprise Act 2002

• not use or in any way disclose information acquired during the applicant’s employment with the CMA which is subject to legal professional privilege, including both legal advice privilege and litigation privilege